CVE-2017-11104
Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if
02 Description
Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.68% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.5% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-07-08 10:00Z9 YR AGO
- Last updated
- 2024-08-05 17:57Z2 YR AGO
- Reserved
- 2017-07-08
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 99b416b33f70fe2014cf07f842cbd3213aea7bad758628618cb5a767f03e7090
05 Affected products
06 References
- www.debian.orgDSA-3910http://www.debian.org/security/2017/dsa-3910
- www.securityfocus.com99598http://www.securityfocus.com/bid/99598
- bugs.debian.orghttps://bugs.debian.org/865678
- www.synacktiv.ninjahttp://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdf
- lists.nic.czhttps://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html
- lists.opensuse.orgopenSUSE-SU-2020:1086http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.html
- lists.opensuse.orgopenSUSE-SU-2020:1085http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.html
- lists.opensuse.orgopenSUSE-SU-2020:1112http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.html
- lists.opensuse.orgopenSUSE-SU-2020:1232http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.html
07 Fixed in
Debian 12
- knot Fixed in 2.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- knot Fixed in 2.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- knot Fixed in 2.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- knot No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.